Look at this series: 3, 4, 7, 8, 11, 12, ... What number should come next?
7
10
14
15

• 3, 4 , 7, 8, 11, 12 ......
  
  this is two parts 1) 3,7,11, .........
  2) 4 , 8,12,(multiple for 4)
  
  1-------)difference b/w 3-7=4
  3+4=7
  7+4=11
  11+4=15
  ================================
  that is answer 15
  =================================
  
• 9 years agoHelpfull: Yes(5) No(0)
• 3, 4, 7, 8, 11, 12, ...
  
  next number is 15....
  b/cz
  4-3=1
  7-4=3
  8-7=1
  11-8=3
  12-11=1
  15-12=3
  
• 9 years agoHelpfull: Yes(3) No(0)
• 3, 4, 7, 8, 11, 12, ...
  
  next number is 15.... (12+3)
• 12 years agoHelpfull: Yes(0) No(1)
• look at the series first separete two terms look at the diffetence 1 and differ b/w next two terms is 3 so answer is 15
• 9 years agoHelpfull: Yes(0) No(0)
• Ans: 15
  difference between first no.is 1 and then 3
• 8 years agoHelpfull: Yes(0) No(0)
• diff:1,2 b/w the alternate series
  so 12 13 14 15
  ans:15
• 8 years agoHelpfull: Yes(0) No(0)
• 15 is the answer as two numbers are arranged at one difference and the 3rd one on difference of 3
  so after 12 +3=15
• 8 years agoHelpfull: Yes(0) No(0)
• 3,4,7,8,11,12...
  escaping 5,6 then 9,10 similarly 13,14...
  next will b 15
• 8 years agoHelpfull: Yes(0) No(0)
• if i am starting with 3 then,
  4-3=1
  7-4=3
  8-7=1
  11-8=3
  12-11=1 ...
  thus we can see that the sequence is like 1,3,1,3,...
  thus my answer will be 12+3=15 as till 12 we are getting 12-11=1, so the difference between 12 and the next number in this series must be 3.
  ______________________________________________________
  so my answer is 15.
• 8 years agoHelpfull: Yes(0) No(0)
• next number is 15....
  b/cz
  4-3=1
  7-4=3
  8-7=1
  11-8=3
  12-11=1
  15-12=3
  
• 8 years agoHelpfull: Yes(0) No(0)
• ans was 15
  3,7and 11 -===> difference was 4 so next no was 15 only
• 8 years agoHelpfull: Yes(0) No(0)
• 3+1=4
  4+3=7
  7+1=8
  8+3=11
  11+1=12
  12+3=15
  then 15 is the correct answer. as alternatively 1 and 3 added with series.
• 8 years agoHelpfull: Yes(0) No(0)
• by looking series...
  No at odd position is increasing by 3 = previous term+3. (3 , 4+3 , 8+3 , 12+3 , ....)
  No at even position has increasing by 1 = previous term+1. (4 , 7+1 , 11+1 , ....)
  
  6 terms are given and we have to find out 7th term that is no at odd position
  so it will be = previous term+3 = 12+3 = 15
  ANSWER = 15
• 8 years agoHelpfull: Yes(0) No(0)
• 15
  3,7,11... is in series and 4,8,12.... is in series with c.d=4 ,so next no. will be 15
• 8 years agoHelpfull: Yes(0) No(0)
• 12 + 3 =15
• 8 years agoHelpfull: Yes(0) No(0)
• ans:15
  3,4_ _ 7,8_ _ 11,12 _ _ 15
  in the above gap is filled with 5,6 next numbers are 7,8
  in the ------------------------------------ 9,10 next number are 11,12 so on
  i.e gap of 2 numbers in between them
• 8 years agoHelpfull: Yes(0) No(0)
• 3+1=4
  4+3=7
  7+1=8
  8+3=11
  11+1=12
  12+3=15.....
• 8 years agoHelpfull: Yes(0) No(0)
• 3+1=4
  4+3=7
  7+1=8
  8+3=11
  11+1=12
  12+3=15.....
• 8 years agoHelpfull: Yes(0) No(0)
• 15 3+1=4 4+3=7+1=8+3=11+1=12+3=15
• 8 years agoHelpfull: Yes(0) No(0)
• ans will be 15
  because , 3+4=7
  7+1=8
  8+3=11
  11+1=12
  12+3=15
  so from here we can see that the interval of summation is 1,3 respectively
  so ans will be 15
• 8 years agoHelpfull: Yes(0) No(0)
• The successive terms are obtained as follows ,
  Even place terms are obtained by adding 1 to preceding term
  Odd place terms are obtained by adding 3 to preceding even place term.
  Therefore, 12 +1=13 ;
  
• 8 years agoHelpfull: Yes(0) No(0)
• 15
  difference between first two 4-3=1
  and 7-4 = 3
  and so on ..
  ans will be 12+3=15
• 8 years agoHelpfull: Yes(0) No(0)
• 3,7,11 and 4,8,12 are two series and all digits have 4's difference.next no. will 15
• 8 years agoHelpfull: Yes(0) No(0)
• 15
  
  
  
  
  
  
  
• 8 years agoHelpfull: Yes(0) No(0)
• 3+1=4
  4+3=7
  7+1=8
  8+3=11
  11+1=12
  12+3=15
  Here you can see that the numbers getting added to the previous numbers is 1 and then 3.
  Hence,answer is 15.
  
  
• 8 years agoHelpfull: Yes(0) No(0)
• 15
  3 , 4 , _,_,7,8,_,_,11,12_,_15
• 8 years agoHelpfull: Yes(0) No(0)
• Ans 15
  3,4,3+4=7,4+4=8,7+4=11,8+4=12,11+4=15
• 8 years agoHelpfull: Yes(0) No(0)
• At odd position add 1 and at even position add 3
  therefore required answer= 15
• 8 years agoHelpfull: Yes(0) No(0)
• Ans: 15
  first series: 3, 7, 11,..
  second series: 4 ,8, 12,.....
  so the first series next number is 3 more than the previous number
• 8 years agoHelpfull: Yes(0) No(0)
• 3+1=4
  4+3=7
  7+1=8
  8+3=11
  11+1=12
  12+3=15
• 7 years agoHelpfull: Yes(0) No(0)
• the sequence is +1,+3,+1,+3,+1,+3
  then the ans is 15
• 7 years agoHelpfull: Yes(0) No(0)
• answer is 15
  look at the series it's with the difference 1 and 3
• 4 years agoHelpfull: Yes(0) No(0)
• From this given sequence we found that
  3
  3+1=4
  4+3=7
  7+1=8
  8+3=11
  11+1=12
  and 12+3=15
• 4 years agoHelpfull: Yes(0) No(0)